*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19750
19760
19771
19781
19790
19800
19810
19820
19831
19840
19851
19861
19871
19880
19890
19900
199110
19920
19932
19946
19955
19963
19971
19980
19992
20000
200149
20020
200314
20046
20050
20060
20075
20082
20090
201053
201110
20121
201318
201413
20157
201617
20173
20187
20192
20201
20210
20220
20230
20240
Total245